public class Exam2_4 {
	public static void main(String args[]) {
		int a[] ={1,2,3,4};
		int b[] ={100,200,300};
		System.out.println("shuzu A de geshu ="+a.length);
		System.out.println("shuzu B de geshu ="+b.length);
		System.out.println("shuzu A de yinyong ="+a);
		System.out.println("shuzu B de yinyong ="+b);
		a = b;
		System.out.println("shuzu A de geshu ="+a.length);
		System.out.println("shuzu B de geshu ="+b.length);
		System.out.println("a[0]="+a[0]+",a[1]="+a[1]+",a[2]="+a[2]);
		System.out.println("b[0]="+b[0]+",b[1]="+b[1]+",a[2]="+b[2]);
	}
}


